You need a scan tool that can output actual coolant temp and O2 data.
You might check the resistance of the coolant temp sensor. Speculate at 60F ohm reading around 0.6. At 176F 0.3, 212F 0.2 ohm. Have no real data.
There is a coolant temp wiring harness connection to the main harness on one or the other side of the radiator.
If hard starting try disconnecting the coolant sensor and O2 sensor one at time and determining if this make a difference in starting.